Johnson Controls Metasys N2 User Manual

Network Communications—N2 Communications Bus
21
Figure 7 shows the N2 Bus branching from multiple repeaters. The branch
can be at either Side A or B. Multiple branches off one side are also
allowed, as long as the device and distance limitations are followed. This
network shows three segments.
N2 Bus N2 Bus
Operator Workstation
5-slot NCU
1-slot NEU
N2
EOL
Out
Repeater
Side A=N2 EOL Out
Side B=N2 EOL In
A
B
Operator Workstation
Repeater
Side A=N2 EOL In
Side B=N2 EOL Out
1-slot NEU
N2
EOL
Out
ASC
(ILC Shown)
1-slot NEU
N2
EOL
In
N2
EOL
Out
A
B
B
A
ASC
(ILC Shown)
N2
EOL
Out
2-slot NEU
2-slot NEU
One
N2
EOL
In
All N2
EOLs
Out
A
B
Repeater
Side A=N2 EOL In
Side B=N2 EOL In
Repeater
Side A=N2 EOL Out
Side B=N2 EOL In
N1
EOL
In
N1
EOL
In
N1 EOL
Out
NCM's N2
EOL In
LAYOUT4
N1 LAN
Note:
Since the repeater delays the N2 Bus signal
between Sides A and B, a maximum of
two repeaters can be cascaded (connected in series).
Figure 7: N2 Bus Layout with Branched Repeaters

Johnson Controls Metasys N2 Specifications

General

Brand	Johnson Controls
Model	Metasys N2
Category	Cables and connectors
Language	English